EP2222261B1 - Pansement drainant - Google Patents

Pansement drainant Download PDF

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Publication number
EP2222261B1
EP2222261B1 EP08848962.0A EP08848962A EP2222261B1 EP 2222261 B1 EP2222261 B1 EP 2222261B1 EP 08848962 A EP08848962 A EP 08848962A EP 2222261 B1 EP2222261 B1 EP 2222261B1
Authority
EP
European Patent Office
Prior art keywords
layer
wound
liquid
drainage
dressing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08848962.0A
Other languages
German (de)
English (en)
Other versions
EP2222261A1 (fr
Inventor
Michael Larsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medela Holding AG
Original Assignee
Medela Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medela Holding AG filed Critical Medela Holding AG
Publication of EP2222261A1 publication Critical patent/EP2222261A1/fr
Application granted granted Critical
Publication of EP2222261B1 publication Critical patent/EP2222261B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/36—Surgical swabs, e.g. for absorbency or packing body cavities during surgery
    • A61F13/05—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/91—Suction aspects of the dressing
    • A61M1/915—Constructional details of the pressure distribution manifold
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/0017—Wound bandages possibility of applying fluid
    • A61F2013/00174—Wound bandages possibility of applying fluid possibility of applying pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00182—Wound bandages with transparent part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00412—Plasters use for use with needles, tubes or catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00536—Plasters use for draining or irrigating wounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/0054—Plasters use for deep wounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00846—Plasters with transparent or translucent part

Definitions

  • the invention relates to a wound drainage pad according to the preamble of patent claim 1.
  • a vacuum drainage device It is known to treat large or poorly healing wounds with a vacuum drainage device.
  • the wound is covered with a cover, for example a film or a stiff hood, so that a wound space is created.
  • a drainage tube is introduced into the wound space from the outside, which is connected to a vacuum pump in order to suck wound secretions out of the wound.
  • a wound drainage pad is placed on the wound.
  • This wound drainage pad is usually a foam insert with appropriately designed pores.
  • the foam insert usually also serves as absorbent body for the wound secretion and must be changed accordingly often.
  • Corresponding wound drainage pads are made, for example WO 2006/056294 . US Pat. No. 7,070,584 . EP 1 284 777 and EP 0 620 720 known.
  • a wound drainage pad with a foam insert outside the airtight cover layer is in WO 2006/052839 described.
  • foam inserts have the disadvantage that they collapse when applying a negative pressure or at least clog their pores. This can not be a kontanter Fluid transport can be maintained. In the worst case, even the transport of the wound secretion is blocked.
  • WO 03/086232 further discloses a wound drainage pad for supporting a vacuum to be treated with a layer placed on the wound surface and having through holes and channels for distributing the negative pressure and an overlying cover layer having an access opening for the vacuum tube.
  • the wound dressing is stiff and incompressible. It is also transparent, so that wound healing can be observed.
  • the wound drainage pad may be impregnated with silver ions.
  • a similar wound drainage pad is disclosed, wherein here above the cover layer a gauze is arranged, which fills the wound cavity up to the height of the healthy skin. Over this gauze a film is arranged, which allows water vapor to escape from the cavity.
  • EP 0 099 758 shows a wound dressing for use without drainage, especially for use with electrical stimulation.
  • This wound dressing is multi-layered, having a semi-permeable membrane, a permeable reinforcing layer of a textile material and a biodegradable, non-adherent contact layer. The membrane controls the vapor transfer away from the wound.
  • a wound dressing without drainage which for the purpose of moisturizing the wound can control the water vapor transfer.
  • Wound dressings with layers which transport a fluid into a next higher layer are also known, for example US Pat. No. 6,077,526 and WO 2004/060412 described.
  • US 5,989,478 discloses a fabric proposed as a topsheet for sanitary napkins, diapers or wound dressings.
  • the fabric is liquid permeable and actively transports the liquid from one surface to the opposite surface where it can be delivered to a wicking layer.
  • the inventive wound drainage pad for resting on a wound to be treated by means of negative pressure has at least two layers arranged one above the other, wherein a first wound-side layer is a functional textile material and a second layer arranged above it is dimensionally stable and liquid-permeable.
  • the functional textile material is liquid permeable at least in one direction and also anisotropic.
  • This wound drainage pad is suitable for use as an insert in a wound, which is subjected to a negative pressure. Such wound drains are suitable for healing wounds of human and animal patients.
  • the first layer and the second layer can be constructed in one layer or over the entire volume, or they can each consist of a composite material.
  • the second layer is preferably coarse-meshed or formed with large apertures otherwise distributed over its surface or the entire volume, so that the applied negative pressure can be evenly distributed and the suction channels of the second layer can not become clogged by suction wound secretions.
  • FIG. 1 a preferred embodiment of the inventive wound drainage pad or the inventive filler is shown. It serves as in FIG. 2 can be seen, for resting on a wound W or for insertion into a wound cavity K, wherein the wound drainage pad completely covered with an airtight cover 5 and thus the wound cavity K is hermetically sealed.
  • the cover 5 may be a rigid hood, a flexible foil or other covering means known in the art.
  • the cover 5 is self-adhering at least at its edges so that it can be glued airtight to the patient's healthy skin surrounding the wound.
  • the cover 5 can not be designed to be self-adhesive and fastened with additional fastening means, in particular adhesive strips.
  • a drainage tube 4 leads to the outside. This is connected to a vacuum or vacuum pump, so that in the cavity K, a negative pressure can be generated and the liquid present in the cavity K, in particular the wound secretion, can be sucked. Typically, a negative pressure of 50 mmHg to 220 mmHg is generated.
  • one or more supply lines can be guided through the cover 5 into the cavity K. be. Cleaning solutions such as sodium chloride or drugs such as zinc oxide can be introduced into the wound cavity K through these feed lines.
  • the inventive wound drainage pad is foam-free. It consists of at least two superimposed layers or layers, namely a wound-side first layer 1 of a functional material and a second layer 2 arranged above it, which is dimensionally stable or rigid and is designed to be liquid-permeable. As in FIG. 1 shown, may additionally be present a third layer 3, which covers the second layer 2 and is formed as a liquid-tight cover layer. It can, but does not have to be airtight.
  • the first layer 1 is made of a functional textile material.
  • a textile material is meant herein a material which is e.g. may be a woven or knitted fabric.
  • a functional material is understood here as meaning a material which can take on an active function, for example a liquid transport or a drug delivery.
  • a functional textile material in particular, the materials known from the sportswear industry are suitable.
  • the first layer is flexible, in particular it is a flexible fabric.
  • This first layer 1 may be formed in one layer. However, it preferably has several layers with different functions. Preferably, this first layer 1 has a thickness of 0.1 mm to 5 mm. Preferably, this first layer 1 is self-supporting. It may be connected to the second layer 2, in which case it does not necessarily have to be self-supporting.
  • the first layer 1 is designed so that it can perform an active or automatic liquid transport. This means that the wound fluid is transported away from the wound, even without application of a negative pressure, to the next higher position, here the second layer 2.
  • the first layer 1 has capillaries for this purpose.
  • Such materials are known in the art, for example For sportswear or as mentioned above, for sanitary napkins, diapers and wound dressings without drainage.
  • the first layer 1 is designed for the time-delayed and / or well-dosed delivery of active substances. It may, for example, deliver medication and / or be coated with silver ions. This functionality can be combined with the functionality of the automatic liquid transport. Other functionalities, as known in the field of nanotechnology, are also possible.
  • the second layer or layer 2 is relatively stiff or at least dimensionally stable. However, adaptation to unevenness in the wound is preferably possible. Dimensionally stable in this context is intended to mean that this second layer 2 does not collapse when a negative pressure is applied and its inner cavities or channels are not or only slightly compressed. It is also liquid-permeable and formed with sufficiently large internal openings, so that the wound secretion can be sucked through this second layer 2, without this second layer 2 is clogged. These inner openings are preferably uniformly distributed over the entire surface of the second layer 2, so that the applied negative pressure can be uniformly distributed to the surface of the first layer 1 and thus the wound. Preferably, the second layer 2 is formed the same over the entire volume, ie, that the inner openings are distributed equally over the entire volume.
  • this second layer consists of a single layer.
  • it can also be of multilayer design and the individual layers can be configured the same or different from each other.
  • a near-wound layer of the second layer 2 may have larger or more openings than a layer remote from the wound.
  • the second layer 2 is a coarse mesh, a loose knit or a wire mesh. It can be made for example of a plastic or a metal.
  • the thickness of the second layer 2 is dependent on the shape or depth of the wound.
  • the second layer 2 has, in particular, a thickness which is many times greater than the first layer 1.
  • the third layer 3 is liquid-tight, preferably airtight. It is for example a simple fabric, a film or a coating, which is applied to the second layer 2, in particular glued or welded. Preferably, this third layer 3 is transparent, so that the wound secretion stream or the drug flow in the second layer 2 can be observed. Also, the above-mentioned cover 5 is formed transparent.
  • the drainage tube 4 is in this example laterally directly, ie introduced without enforcement of the third layer 3, in the second layer 2. However, he can also enforce the third layer 3. Within the second layer, the drainage tube 4 according to the invention passes into a plurality of distributor tubes 40, which have distributed over its circumference arranged suction openings.
  • the distribution pipes 40 may be formed on the hose 4 or be mated with this. These distributor tubes 40 extend approximately over the entire width or length of the second layer.
  • the wound drainage pad according to the invention has a simple structure, has a good mode of action thanks to the functional first layer and, thanks to the dimensionally stable second layer, ensures optimum transport of wound secretion.

Claims (6)

  1. Un pansement drainant destiné à être appliqué sur une plaie à traiter par pression négative, où le pansement drainant est conçu pour permettre l'insertion d'un tuyau de drainage dans la plaie et le raccordement de celui-ci à une pompe à pression négative, pour générer un pression négative dans la plaie et aspirer le liquide de plaie présent dans la plaie, où le pansement drainant présente au moins deux couches superposées, où une première couche (1) côté plaie est un matériau textile et une seconde couche (2) disposée au-dessus de celle-ci est formée de façon perméable aux fluides et indéformable, caractérisé en ce que la première couche (1) est réalisée en matériau anisotropique, lequel peut effectuer un transport de liquide autonome, de sorte que celui-ci transporte du liquide de plaie sans application de pression négative depuis la plaie vers la seconde couche (2), où la première couche (1) présente des capillaires pour le transport autonome du liquide de plaie vers la seconde couche (2), qu'une troisième couche (3) imperméable aux fluides est disposée au-dessus de la seconde couche (2), où la troisième couche (3) est transparente, de sorte que l'écoulement de liquide dans la seconde couche (2) peut être observé, et qu'un tuyau de drainage est inséré dans la seconde couche (2), où le tuyau de drainage (2) passe à des tubes de distribution (40), lesquels s'étendent approximativement à travers la longueur respectivement la largeur intégrale de la seconde couche (2) et lesquels présentent des ouvertures d'aspiration disposées le long de leur circonférence.
  2. Un pansement drainant selon la revendication 1, où la deuxième couche (2) est un tissu, un tricot ou un treillis.
  3. Le pansement drainant selon une des revendications 1 ou 2, où le matériau de la première couche (1) est conçu pour une libération de principe actif, en particulier de médicaments et / ou d'ions d'argent, de manière retardée et / ou ajustée en dose.
  4. Le pansement drainant selon une des revendications 1 à 3, où le matériau est un tissu flexible.
  5. Le pansement drainant selon une des revendications 1 à 4, où la deuxième couche (2) présente une épaisseur plusieurs fois plus importante que la première couche (1).
  6. Le pansement drainant selon une des revendications 1 à 5, où celui-ci est exempt de mousse.
EP08848962.0A 2007-11-13 2008-11-04 Pansement drainant Active EP2222261B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH17552007 2007-11-13
PCT/CH2008/000466 WO2009062327A1 (fr) 2007-11-13 2008-11-04 Pansement drainant

Publications (2)

Publication Number Publication Date
EP2222261A1 EP2222261A1 (fr) 2010-09-01
EP2222261B1 true EP2222261B1 (fr) 2018-05-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08848962.0A Active EP2222261B1 (fr) 2007-11-13 2008-11-04 Pansement drainant

Country Status (3)

Country Link
US (1) US9408755B2 (fr)
EP (1) EP2222261B1 (fr)
WO (1) WO2009062327A1 (fr)

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WO2009062327A1 (fr) 2009-05-22
US20100262091A1 (en) 2010-10-14
EP2222261A1 (fr) 2010-09-01
US9408755B2 (en) 2016-08-09

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